/*
 *    Copyright 2006-2020 the original author or authors.
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */
package org.mybatis.generator.api.dom.java;

import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;

/**
 * This class contains a list of Java reserved words.
 *
 * @author Jeff Butler
 *
 */
public class JavaReservedWords {

	private static final Set<String> reservedWords;

	static {
		String[] words = { "abstract", //$NON-NLS-1$
				"assert", //$NON-NLS-1$
				"boolean", //$NON-NLS-1$
				"break", //$NON-NLS-1$
				"byte", //$NON-NLS-1$
				"case", //$NON-NLS-1$
				"catch", //$NON-NLS-1$
				"char", //$NON-NLS-1$
				"class", //$NON-NLS-1$
				"const", //$NON-NLS-1$
				"continue", //$NON-NLS-1$
				"default", //$NON-NLS-1$
				"do", //$NON-NLS-1$
				"double", //$NON-NLS-1$
				"else", //$NON-NLS-1$
				"enum", //$NON-NLS-1$
				"extends", //$NON-NLS-1$
				"final", //$NON-NLS-1$
				"finally", //$NON-NLS-1$
				"float", //$NON-NLS-1$
				"for", //$NON-NLS-1$
				"goto", //$NON-NLS-1$
				"if", //$NON-NLS-1$
				"implements", //$NON-NLS-1$
				"import", //$NON-NLS-1$
				"instanceof", //$NON-NLS-1$
				"int", //$NON-NLS-1$
				"interface", //$NON-NLS-1$
				"long", //$NON-NLS-1$
				"native", //$NON-NLS-1$
				"new", //$NON-NLS-1$
				"package", //$NON-NLS-1$
				"private", //$NON-NLS-1$
				"protected", //$NON-NLS-1$
				"public", //$NON-NLS-1$
				"return", //$NON-NLS-1$
				"short", //$NON-NLS-1$
				"static", //$NON-NLS-1$
				"strictfp", //$NON-NLS-1$
				"super", //$NON-NLS-1$
				"switch", //$NON-NLS-1$
				"synchronized", //$NON-NLS-1$
				"this", //$NON-NLS-1$
				"throw", //$NON-NLS-1$
				"throws", //$NON-NLS-1$
				"transient", //$NON-NLS-1$
				"try", //$NON-NLS-1$
				"void", //$NON-NLS-1$
				"volatile", //$NON-NLS-1$
				"while" //$NON-NLS-1$
		};

		reservedWords = new HashSet<>(words.length);

		reservedWords.addAll(Arrays.asList(words));
	}

	public static boolean containsWord(String word) {
		boolean rc;

		if (word == null) {
			rc = false;
		} else {
			rc = reservedWords.contains(word);
		}

		return rc;
	}

	/**
	 * Utility class - no instances allowed.
	 */
	private JavaReservedWords() {
	}
}
